Qualification > Sciences
ALL PHYSICS DOUBTS - POST HERE !!
6394:
--- Quote from: ~VIN1094~ on May 26, 2010, 10:28:06 pm ---something like this .. pls. excuse the handwriting ;)
--- End quote ---
u still on lol
;) ;) ;) ;)
red_911:
--- Quote from: ~VIN1094~ on May 26, 2010, 10:28:06 pm ---something like this .. pls. excuse the handwriting ;)
--- End quote ---
lool @ the handwriting ;D
the_grim_reaper:
Guys just one thing. Do we need to know how bistable circuits work for tomorrow? And what about a bridge rectifier?? Especially the example in June 09(If it has been answered, just mention the page number) . All I get is that it ends in a short-circuit :D. Smoked paper 1 and p 6 was good too but I'm scared about this one :'(....
pglasg74:
http://www.freeexampapers.us/IGCSE/Physics/CIE/2007%20Jun/0625_s07_qp_3.pdf
someone please tell me why number 9 its anticlockwise.. if i used FLH, my index points right, and my middle finger points towards me cse of the current (right?) so my thumb is up.. which means its clockwise.. what am i doing wrong? :(
Baladya:
I used to do ur mistake... forget about resistance...
use P=VI ... when there is a higher Voltage there HAS to be a lower current. THE POWER IS THE SAME, its not changed. so when one is increased, the other decreases.
The more the current, the more there is heat loss. so we want a high voltage, which will cuz the current to be less and so less heat lost. but the same power will be given.
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